策略模式
①定义规范
package org.fanzone.design.strategy;
/**
* Title: base<br>
* Description: Just a rule, which called interface.<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 22, 2011 7:53:11 PM <br>
* @author wangmeng
*/
public interface IRobort {
/**
* Be one's baby.
*/
void performTrust();
}
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②规范的不同实现
package org.mars.design.strategy;
/**
* Title: base<br>
* Description: Another implementation.<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 22, 2011 8:02:27 PM <br>
* @author wangmeng
*/
public class ProgramControlledRobort implements IRobort {
public void performTrust() {
System.out.println("According to the requirements of the numerical control in order and conditions, which in turn control of the robot mechanical action.");
}
}
package org.mars.design.strategy;
/**
* Title: base<br>
* Description: One implementation.<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 22, 2011 8:06:17 PM <br>
* @author wangmeng
*/
public class NumericalControlRobort implements IRobort {
public void performTrust() {
System.out.println("Don't make robots action, through the numerical, language on the robot, robot. Teaching according to the information and after teaching work.");
}
}
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③构建策略
package org.mars.design.strategy;
/**
* Title: base<br>
* Description: The Executor of the Strategy.<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 22, 2011 8:13:21 PM <br>
* @author wangmeng
*/
public class StrategyExecutor {
private IRobort robort;
public StrategyExecutor(){}
/**
* Constructor's rebuilding.
* @param robort -- The implementation class of the specified interface.
*/
public StrategyExecutor(IRobort robort){
this.robort = robort;
}
/**
* The action of the executor.
*/
public void operate(){
robort.performTrust();
}
}
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④根据不同的应用执行不同的策略
package org.mars.design.strategy;
/**
* Title: base<br>
* Description: Just for the testing.<br>
* Copyright: Copyright (c) 2011 <br>
* Create DateTime: Jun 22, 2011 8:10:57 PM <br>
* @author wangmeng
*/
public class Commissioning {
public static void main(String[] args){
/**To Build two executor of the strategy with the specified implementation class of the interface.*/
StrategyExecutor executorOne = new StrategyExecutor(new NumericalControlRobort());
StrategyExecutor executorTwo = new StrategyExecutor(new ProgramControlledRobort());
/**Just do the action.*/
executorOne.operate();
executorTwo.operate();
}
}